update login plugin to IPluginV2

Plugins/Login/LoginConfiguration.cs

@@ -0,0 +1,16 @@
+using SharedLibraryCore.Interfaces;
+
+namespace IW4MAdmin.Plugins.Login
+{
+    public class LoginConfiguration : IBaseConfiguration
+    {
+        public bool RequirePrivilegedClientLogin { get; set; }
+
+        public IBaseConfiguration Generate()
+        {
+            return this;
+        }
+
+        public string Name() => "LoginConfiguration";
+    }
+}